Pedigree Quiz

Which individual in the first generation is a carrier?

• The male
• The female
• individual 1
• None of the above

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4

In a pedigree, what shape represents a male?

• circle
• square
• triangle
• diamond

Is this trait (the shaded individuals) dominant or recessive?

• dominant
• recessive

What does a horizontal line between a square and a circle mean?

• They are siblings
• They are cousins
• They are married ("together")
• They are the children

How many boys did the mother and father from the first generation have?

• 2
• 4
• 5
• 6

How many people in this whole pedigree have the trait/disease?

• 2
• 3
• 4
• 6

How many girls in this family express this recessive disorder?

• 4
• 5
• 6
• 7

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4

There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait?

• Dominant
• Recessive